This paper aims at investigating the effect of Arabization of Romanic Alphabets on the development of 9th Grade English as a Foreign Language students' composition writing skills at secondary school level. This experimental study includes 25 secondary school students in their 9th Grade in which English is taught as a foreign language at Al-Husainieh Secondary School for boys. The finding of this study indicates that students usually tend to write and compose English language sentences through Romanizing Arabic letters. This may be related to different reasons such as their weakness in writing and lack of awareness about specific aspect of sentence structures and lack of vocabulary deposit, but even good students tend to use the Romanic alphabets in writing. This study recommends that students should be familiar with the meaning of English words.